CFD Model of Gas-Solid Combustion in Moving Grate MSW Incinerator

被引：0

作者：

Shan P. ^{[1
]}

Xia Z. ^{[1
]}

Chen C. ^{[1
]}

Du H. ^{[2
]}

Huang J. ^{[2
]}

Bai L. ^{[2
]}

机构：

[1] School of Resources & Environmental Engineering, East China University of Science and Technology, Xuhui District, Shanghai

[2] Shanghai SUS Environment Co., Ltd., Qingpu District, Shanghai

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 02期

关键词：

Gas-solid combustion; Grate modelling; Kinetic theory of granular flows (KTGF); Municipal solid wastes (MSW) incineration;

D O I：

10.13334/j.0258-8013.pcsee.191241

中图分类号：

学科分类号：

摘要：

Computational fluid dynamics (CFD) modelling is an important method to investigate MSW combustion, and is helpful for the design and operation of incinerators. Modelling in-bed thermal conversions plays a key role in the moving grate incinerator simulation. In the present work, an in-bed gas-solid combustion model based on the FLUENT platform was proposed. The rheological properties of the solid phase were described by the kinetic theory of granular flows (KTGF). Moisture evaporation, devolatilization, volatile gas combustion, and char-O2 combustion were taken into account. Maximum continuous rating (MCR) case shows that the evaporation mainly occurs in the drying section of grate, and the bed temperature is about 400K; volatile is released and ignited in the combustion section with a maximum temperature of 1400K; char is burnt in the third section with a temperature of 900K. The bed top conditions of MCR case were then used for 3D steady furnace simulation. The temperature results were verified by the on-site measurements. Case 80% and case 110% were also simulated, the results are as expected. A realistic grate structure was considered and direct grate-furnace coupling is realized, which provides an efficient and practical method for CFD simulation for industrial moving grate MSW incinerators. © 2020 Chin. Soc. for Elec. Eng.

引用

页码：601 / 607

页数：6

共 24 条

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